Skip to main content
Castellum, Inc. logo

Castellum, Inc. — Investor Relations & Filings

Ticker · CTM ISIN · US09073X1000 US Telecommunications, computer programming, consultancy, computing infrastructure, and other information service activities
Open in API
Filings indexed 280 across all filing types
Latest filing 2026-06-01 Regulatory Filings
Country US United States of America
Listing US CTM

About Castellum, Inc.

https://castellumus.com/

Castellum, Inc. is a technology company providing services to U.S. government and commercial clients to address national security challenges. Its core offerings include cybersecurity, software development, systems engineering, information and electronic warfare, program support, and data analytics. The company also provides subject matter expertise in artificial intelligence, machine learning, 5G technologies, model-based systems engineering, program management, and intelligence analysis. A key component of Castellum's growth strategy involves the strategic acquisition of technology firms to expand its capabilities and market presence in the national security sector.

Recent filings

Filing Released Lang Actions
S-8
Regulatory Filings Classification · 90% confidence The document is a Form S-8 registration statement filed with the U.S. Securities and Exchange Commission to register additional shares under the company’s stock incentive plan. It is a compliance filing rather than an operational report, earnings release, or management change notice. Form S-8 is a statutory registration statement under the Securities Act of 1933, making it a general regulatory/SEC filing without substantive financial statements discussed within the document itself. Therefore, it falls under Regulatory Filings (RNS).
2026-06-01 English
8-K
Declaration of Voting Results & Voting Rights Announcements Classification · 93% confidence The document is a Form 8-K current report with Item 5.07 “Submission of Matters to a Vote of Security Holders,” providing detailed voting results for three proposals at the 2026 Annual Meeting. This matches the definition for “Declaration of Voting Results & Voting Rights Announcements” (DVA).
2026-05-20 English
8-K
Report Publication Announcement Classification · 88% confidence The document is a short Form 8-K (only ~3,500 characters) under Item 7.01 Regulation FD Disclosure. It merely announces that a press release and a “Meeting Presentation” are attached as Exhibits 99.1 and 99.2, without containing substantive financial or operational data itself. Per the “menu vs meal” rule for brief notices that reports are attached, this is best classified as a Report Publication Announcement (RPA).
2026-05-18 English
8-K - Castellum, Inc. (0001877939) (Filer)
Report Publication Announcement Classification · 82% confidence The document is a U.S. SEC Form 8-K current report in which the company “furnishes” a press release announcing quarterly results (Item 2.02) and an investor presentation (Item 7.01), stating that each is attached as an exhibit. The form itself does not contain substantive financial statements or the full exhibits, but rather announces and publishes those reports. This fits the definition of a Report Publication Announcement (RPA).
2026-05-13 English
DEF 14A - Castellum, Inc. (0001877939) (Filer)
Proxy Solicitation & Information Statement
2026-04-07 English
4 - Castellum, Inc. (0001877939) (Issuer)
Director's Dealing
2026-03-27 English

Browse filings by year

6 years

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.